January 2004
Intermediate to advanced
348 pages
13h 33m
English
Content preview from Hardware Hacking Projects for Geeks
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Part II: Advanced Hacks, Tools, and Techniques
Getting Free Parts
Most semiconductor companies offer
free samples of their parts. Check
their web sites for details on the parts
as well as on sample policies. Usually
you need to answer a few questions
about your application and potential
order volume.
I was able to get two samples of the
National Semiconductor temperature
sensor and the Linear Technology A/D
converter for free simply by visiting
their web sites and filling out a simple
request form.
Project Overview
This project uses the SitePlayer embedded web server, which has a special
serial port that can be easily connected to an analog-to-digital converter
(ADC). I chose the LTC1098 ADC because it was easy to interface to
SitePlayer and it had two channels, enough to capture the coffee level and
the temperature.
You will construct the electronics, modify a coffeemaker, and program a
tiny standalone web server that will monitor your coffee.
A simple block diagram of the system is shown in Figure 15-1. The SitePlayer
board has built-in web server software (which saves you from having to
write it yourself) and an interface port to the ADC circuit board. The ADC
circuit board performs the actual temperature and liquid measurements.
The SitePlayer has its own IP address and responds to HTTP requests.
Hardware Assembly Instructions
This project ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.